EVM-671 Fix block tracker WithBlockMaxBacklog for state_sync_relayer (#…

…1543)

tracker/event_tracker.go

@@ -12,6 +12,8 @@ import (
 	"github.com/umbracle/ethgo/tracker"
 )
 
+const minBlockMaxBacklog = 96
+
 type eventSubscription interface {
 	AddLog(log *ethgo.Log)
 }
@@ -63,7 +65,11 @@ func (e *EventTracker) Start(ctx context.Context) error {
 		return err
 	}
 
-	blockMaxBacklog := e.numBlockConfirmations*2 + 1
+	blockMaxBacklog := e.numBlockConfirmations * 2
+	if blockMaxBacklog < minBlockMaxBacklog {
+		blockMaxBacklog = minBlockMaxBacklog
+	}
+
 	blockTracker := blocktracker.NewBlockTracker(provider.Eth(), blocktracker.WithBlockMaxBacklog(blockMaxBacklog))
 
 	go func() {
@@ -74,18 +80,24 @@ func (e *EventTracker) Start(ctx context.Context) error {
 
 	// Init and start block tracker concurrently, retrying indefinitely
 	go common.RetryForever(ctx, time.Second, func(context.Context) error {
+		start := time.Now().UTC()
+
 		if err := blockTracker.Init(); err != nil {
 			e.logger.Error("failed to init blocktracker", "error", err)
 
 			return err
 		}
 
+		elapsed := time.Now().UTC().Sub(start) // Calculate the elapsed time
+
 		if err := blockTracker.Start(); err != nil {
 			e.logger.Error("failed to start blocktracker", "error", err)
 
 			return err
 		}
 
+		e.logger.Info("Block tracker has been started", "max backlog", blockMaxBacklog, "init time", elapsed)
+
 		return nil
 	})